Hi,
I am using CRM 2013 and I want to calculate modifiedby for a particular field and not for the whole record. For example, I have a field called A which is a dropdown and B which is a user lookup. Initially both are null. When someone changes A's value, B should
give the name who changed A's value. Again if someone changes A's value, then B should give the name who last modified A. In case there is some other change in the record then that should not change the value of B as A is not changed.
Please advise how to do it
Thanks in advance